Estimating the sensitivity of LHC to electroweak symmetry breaking: Longitudinal/Goldstone boson equivalence as a criterion

Based upon our recent study (Phys. Rev. D, vol.51, p.6463, 1995), we reveal the profound physical content of the longitudinal/Goldstone boson equivalence theorem as being able to discriminate physical processes which are sensitive/insensitive to probing the electroweak symmetry breaking (EWSB) sector. We then develop a precise electroweak power counting rule (a generalization from Weinberg's counting method) to separately count the power dependences on the energy E and all relevant mass scales. With these, we analyze the complete set of the bosonic operators in the electroweak chiral Lagrangian and systematically estimate and classify the sensitivities for testing all these effective operators at the CERN LHC via the weak-boson fusions and quark-anti-quark annihilations. These two kinds of processes are shown to be complementary in probing the EWSB mechanism. (orig.)SIGLEAvailable from TIB Hannover: RA 2999(96-148) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Probing electroweak symmetry braking mechanism at the LHC: A guideline from power counting analysis

We formulate the equivalence theorem as a criterion for sensitively probing the electroweak symmetry breaking mechanism, and develop a precise power counting rule for chiral Lagrangian formulated electroweak theories (CLEWT). With these we give a systematic analysis on the sensitivities of the scattering processes W"#+-#W"#+-##->#W"#+-#W"#+-# and q anti q'#->#W"#+-#Z to probing all possible effective bosonic operators in the CLEWT at the CERN Large Hadron Collider (LHC). (orig.)16 refs.SIGLEAvailable from TIB Hannover: RN 437(96-029) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman